Family tree Blesgraaf » Jacobus Antonius Harkmans (1911-)

Personal data Jacobus Antonius Harkmans 


Household of Jacobus Antonius Harkmans

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Timeline Jacobus Antonius Harkmans

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    Historical events

    Birthday June 18, 1911

    • The temperature on June 18, 1911 was between 11.5 °C and 20.0 °C and averaged 15.8 °C. There was 7.8 mm of rain. There was 7.5 hours of sunshine (45%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
    • Koningin Wilhelmina (Huis van Oranje-Nassau) was from 1890 till 1948 sovereign of the Netherlands (also known as Koninkrijk der Nederlanden)
    • In The Netherlands , there was from February 12, 1908 to August 29, 1913 the cabinet Heemskerk, with Mr. Th. Heemskerk (AR) as prime minister.
    • In the year 1911: Source: Wikipedia
      • The Netherlands had about 6.0 million citizens.
      • January 26 » Glenn Curtiss flies the first successful American seaplane.
      • February 18 » The first official flight with airmail takes place from Allahabad, United Provinces, British India (now India), when Henri Pequet, a 23-year-old pilot, delivers 6,500 letters to Naini, about 10 kilometres (6.2mi) away.
      • April 8 » Dutch physicist Heike Kamerlingh Onnes discovers superconductivity.
      • June 22 » Mexican Revolution: Government forces bring an end to the Magonista rebellion of 1911 in the Second Battle of Tijuana.
      • July 7 » The United States, UK, Japan, and Russia sign the North Pacific Fur Seal Convention of 1911 banning open-water seal hunting, the first international treaty to address wildlife preservation issues.
      • September 25 » An explosion of badly degraded propellant charges on board the French battleship Liberté detonates the forward ammunition magazines and destroys the ship.
    

    Same birth/death day

    Source: Wikipedia


    About the surname Harkmans

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    The Family tree Blesgraaf publication was prepared by .contact the author
    When copying data from this family tree, please include a reference to the origin:
    Nico Blesgraaf, "Family tree Blesgraaf", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-blesgraaf/I862.php : accessed March 3, 2026), "Jacobus Antonius Harkmans (1911-)".